Troubleshooting - Kemppi FitWeld 300 Operating Manual

2.7

Troubleshooting

Problem
The machine stops working and the
shielding gas indicator is lit.
Poor welding result
Overheating indicator lit
The wire does not move or wire feed
entangles
Main switch indicator does not switch
on
If the machine's malfunction can not be corrected with these measures, contact the KEMPPI
maintenance service.
© Kemppi Oy / 1202
Cause
The maximum flow rate at the gas cylinder is set to a lower value than the flow rate
you are trying to set with the FitWeld 300 flow adjustment screw.
• At the gas cylinder's flow regulator, set the flow rate much higher than what you
are using in welding. The final adjustment of the gas flow rate is accomplished
with the adjustment screw located inside the FitWeld's wire cabin.
Several factors affect the welding quality.
• Check that the earth return clamp is properly attached, the point of contact is clean
and that the cable and its connectors are intact.
• Check the voltage and wire speed settings on the control panel are correct for the
given wire size and type.
• Check that the shielding gas flow rate at the gun nozzle is correct.
• Check that the shielding gas is suitable for the filler wire used.
• Check that the wire feed is constant, and adjust if necessary.
• Check that the mains voltage is not irregular, too low or too high.
The device has overheated.
• Ensure that cooling air has unrestricted flow.
• The machine's duty cycle has been exceeded. Wait for indicator to turn off.
• Too low or high supply voltage.
Feed rolls, wire liner or contact tips may be defective
• Check that feed rolls are not too tight or too loose.
• Check that the feed roll groove is not too worn or incorrect size for the filler wire
used.
• Check that the wire liner is the correct size and is not blocked or worn out. Replace
if necessary.
• Check that the contact tip is suitable for the wire used and and is not worn out or
blocked.
The machine has no mains voltage
• Check the mains fuses
• Check the mains cable and the wall plug
EN
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